
/*

  KLayout Layout Viewer
  Copyright (C) 2006-2025 Matthias Koefferlein

  This program is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation; either version 2 of the License, or
  (at your option) any later version.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program; if not, write to the Free Software
  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

*/


#include "tlUniqueId.h"
#include "tlThreads.h"

namespace tl
{

static tl::Mutex s_lock;
static id_type s_next_id = 0;

UniqueId::UniqueId ()
{
  tl::MutexLocker locker (&s_lock);
  do {
    m_id = ++s_next_id;
  } while (m_id == 0);
}

} // namespace tl


